using Engine;
using GameEntitySystem;
using TemplatesDatabase;

namespace Game
{
    public class ComponentCetaceanBreatheBehavior : ComponentBehavior, IUpdateable
    {
        public SubsystemParticles m_subsystemParticles;

        public SubsystemAudio m_subsystemAudio;

        public SubsystemTerrain m_subsystemTerrain;

        public ComponentCreature m_componentCreature;

        public ComponentPathfinding m_componentPathfinding;

        public StateMachine m_stateMachine = new StateMachine();

        public Random m_random = new Random();

        public WhalePlumeParticleSystem m_particleSystem;

        public float m_importanceLevel;

        public UpdateOrder UpdateOrder => UpdateOrder.Default;

        public override float ImportanceLevel => m_importanceLevel;

        public void Update(float dt)
        {
            if (!IsActive)
            {
                m_stateMachine.TransitionTo("Inactive");
            }
            m_stateMachine.Update();
        }

        public override void Load(ValuesDictionary valuesDictionary, IdToEntityMap idToEntityMap)
        {
            m_subsystemParticles = Project.FindSubsystem<SubsystemParticles>(throwOnError: true);
            m_subsystemAudio = Project.FindSubsystem<SubsystemAudio>(throwOnError: true);
            m_subsystemTerrain = Project.FindSubsystem<SubsystemTerrain>(throwOnError: true);
            m_componentCreature = Entity.FindComponent<ComponentCreature>(throwOnError: true);
            m_componentPathfinding = Entity.FindComponent<ComponentPathfinding>(throwOnError: true);
            m_stateMachine.AddState("Inactive", null, delegate
            {
                m_importanceLevel = MathUtils.Lerp(0f, 400f, MathUtils.Saturate((0.75f - m_componentCreature.ComponentHealth.Air) / 0.75f));
                if (IsActive)
                {
                    m_stateMachine.TransitionTo("Surface");
                }
            }, null);
            m_stateMachine.AddState("Surface", delegate
            {
                m_componentPathfinding.Stop();
            }, delegate
            {
                _ = m_componentCreature.ComponentBody.Position;
                if (!m_componentPathfinding.Destination.HasValue)
                {
                    Vector3? destination = FindSurfaceDestination();
                    if (destination.HasValue)
                    {
                        float speed = (m_componentCreature.ComponentHealth.Air < 0.25f) ? 1f : m_random.Float(0.4f, 0.6f);
                        m_componentPathfinding.SetDestination(destination, speed, 1f, 0, useRandomMovements: false, ignoreHeightDifference: false, raycastDestination: false, null);
                    }
                }
                else if (m_componentPathfinding.IsStuck)
                {
                    m_importanceLevel = 0f;
                }
                if (m_componentCreature.ComponentHealth.Air > 0.9f)
                {
                    m_stateMachine.TransitionTo("Breathe");
                }
            }, null);
            m_stateMachine.AddState("Breathe", delegate
            {
                Vector3 forward = m_componentCreature.ComponentBody.Matrix.Forward;
                Vector3 value = m_componentCreature.ComponentBody.Matrix.Translation + 10f * forward + new Vector3(0f, 2f, 0f);
                m_componentPathfinding.SetDestination(value, 0.6f, 1f, 0, useRandomMovements: false, ignoreHeightDifference: false, raycastDestination: false, null);
                m_particleSystem = new WhalePlumeParticleSystem(m_subsystemTerrain, m_random.Float(0.8f, 1.1f), m_random.Float(1f, 1.3f));
                m_subsystemParticles.AddParticleSystem(m_particleSystem);
                m_subsystemAudio.PlayRandomSound("Audio/Creatures/WhaleBlow", 1f, m_random.Float(-0.2f, 0.2f), m_componentCreature.ComponentBody.Position, 10f, autoDelay: true);
            }, delegate
            {
                m_particleSystem.Position = m_componentCreature.ComponentBody.Position + new Vector3(0f, 0.8f * m_componentCreature.ComponentBody.BoxSize.Y, 0f);
                if (!m_subsystemParticles.ContainsParticleSystem(m_particleSystem))
                {
                    m_importanceLevel = 0f;
                }
            }, delegate
            {
                m_particleSystem.IsStopped = true;
                m_particleSystem = null;
            });
        }

        public virtual Vector3? FindSurfaceDestination()
        {
            Vector3 vector = 0.5f * (m_componentCreature.ComponentBody.BoundingBox.Min + m_componentCreature.ComponentBody.BoundingBox.Max);
            Vector3 forward = m_componentCreature.ComponentBody.Matrix.Forward;
            float s = 2f * m_componentCreature.ComponentBody.ImmersionDepth;
            for (int i = 0; i < 16; i++)
            {
                Vector2 vector2 = (i < 4) ? (new Vector2(forward.X, forward.Z) + m_random.Vector2(0f, 0.25f)) : m_random.Vector2(0.5f, 1f);
                var v = Vector3.Normalize(new Vector3(vector2.X, 1f, vector2.Y));
                Vector3 end = vector + s * v;
                TerrainRaycastResult? terrainRaycastResult = m_subsystemTerrain.Raycast(vector, end, useInteractionBoxes: false, skipAirBlocks: false, (int value, float d) => Terrain.ExtractContents(value) != 18);
                if (terrainRaycastResult.HasValue && Terrain.ExtractContents(terrainRaycastResult.Value.Value) == 0)
                {
                    return new Vector3(terrainRaycastResult.Value.CellFace.X + 0.5f, terrainRaycastResult.Value.CellFace.Y, terrainRaycastResult.Value.CellFace.Z + 0.5f);
                }
            }
            return null;
        }
    }
}
